Controller



FIG. 1 is a top front right perspective view of a controller showing our new design;

FIG. 2 is a back side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a back view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a right view thereof, a left view thereof being a right-and-left symmetrical image.

The broken lines in FIG. 1 show portions of the controller that form no part of the claimed design. 

CLAIM The ornamental design for a controller, as shown and described. 